1 /*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "bgtaskSubscriber_fuzzer.h"
17 #include "ibackground_task_subscriber.h"
18 #include "securec.h"
19
20 #include "background_task_subscriber_stub.h"
21 #include "background_task_subscriber.h"
22
23 namespace OHOS {
24 namespace BackgroundTaskMgr {
25 constexpr int32_t U32_AT_SIZE = 4;
26 constexpr int32_t MAX_CODE = 15;
27 constexpr uint8_t TWENTYFOUR = 24;
28 constexpr uint8_t SIXTEEN = 16;
29 constexpr uint8_t EIGHT = 8;
30 constexpr int32_t THREE = 3;
31 constexpr int32_t TWO = 2;
32 const std::u16string BACKGROUND_TASK_MGR_SUBSCRIBER_TOKEN = u"ohos.resourceschedule.IBackgroundTaskSubscriber";
33 class TestBackgroundTaskSubscriber : public BackgroundTaskSubscriber {
34 public:
TestBackgroundTaskSubscriber()35 TestBackgroundTaskSubscriber() : BackgroundTaskSubscriber() {}
36 };
37
GetU32Data(const char * ptr)38 uint32_t GetU32Data(const char* ptr)
39 {
40 return (ptr[0] << TWENTYFOUR) | (ptr[1] << SIXTEEN) | (ptr[TWO] << EIGHT) | (ptr[THREE]);
41 }
42
DoSomethingInterestingWithMyAPI(const char * data,size_t size)43 bool DoSomethingInterestingWithMyAPI(const char* data, size_t size)
44 {
45 uint32_t code = GetU32Data(data);
46 MessageParcel datas;
47 datas.WriteInterfaceToken(BACKGROUND_TASK_MGR_SUBSCRIBER_TOKEN);
48 datas.WriteBuffer(data, size);
49 datas.RewindRead(0);
50 MessageParcel reply;
51 MessageOption option;
52 auto subscriber = TestBackgroundTaskSubscriber();
53 auto subscriberImpl = std::make_shared<BackgroundTaskSubscriber::BackgroundTaskSubscriberImpl>(subscriber);
54 subscriberImpl->OnRemoteRequest(code % MAX_CODE, datas, reply, option);
55 return true;
56 }
57 } // BackgroundTaskMgr
58 } // OHOS
59
60 /* Fuzzer entry point */
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)61 extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
62 {
63 /* Run your code on data */
64 if (data == nullptr) {
65 return 0;
66 }
67
68 if (size < OHOS::BackgroundTaskMgr::U32_AT_SIZE) {
69 return 0;
70 }
71
72 char* ch = static_cast<char *>(malloc(size + 1));
73 if (ch == nullptr) {
74 return 0;
75 }
76
77 (void)memset_s(ch, size + 1, 0x00, size+1);
78 if (memcpy_s(ch, size, data, size) != EOK) {
79 free(ch);
80 ch = nullptr;
81 return 0;
82 }
83
84 OHOS::BackgroundTaskMgr::DoSomethingInterestingWithMyAPI(ch, size);
85 free(ch);
86 ch = nullptr;
87 return 0;
88 }
89